<template>
  <ul class="app-header-nav">
    <li class="home"><RouterLink to="/">首页</RouterLink></li>
    <li v-for="item in list"
    :key="item.id"
      @mousemove="$store.commit('category/show', item)"
      @mouseleave="$store.commit('category/hide', item)"
    >
      <RouterLink :to="`/category/${item.id}`">{{ item.name }}</RouterLink>
      <div class="layer" :class="{ open: item.open }">
        <ul>
          <li v-for="item2 in item.children" :key="item2.id"
           @click="$store.commit('category/hide', item)"
          >
            <RouterLink :to="`/category/sub/${item2.id}`">
              <img v-src="item2.picture" alt="" />
              <p>{{ item2.name }}</p>
            </RouterLink>
          </li>
        </ul>
      </div>
    </li>

  </ul>
</template>

<script>

import { toRefs } from 'vue'
import { useStore } from 'vuex'

// import { findAllCategory } from '@/api/category'
export default {
  name: 'AppHeaderNav',
  setup () {
    // 定义空数组接收数据
    // const list = ref([])
    // 接收封装的接口
    // 调用store仓库
    const store = useStore()
    // 异步调用category里面的函数getList
    store.dispatch('category/getList')
    // 保持响应式，然后拿到整个category里面的list
    return { ...toRefs(store.state.category) }
  }
}
</script>

<style scoped lang='less'>
.app-header-nav {
  width: 820px;
  display: flex;
  justify-content: space-around;
  padding-left: 40px;
  position: relative;
  z-index: 998;
  > li {
    margin-right: 40px;
    width: 38px;
    text-align: center;
    > a {
      font-size: 16px;
      line-height: 32px;
      height: 32px;
      display: inline-block;
    }
    &:hover {
      > a {
        color: @xtxColor;
        border-bottom: 1px solid @xtxColor;
      }
    //   // 子分类
    //   > .layer {
    //     height: 132px;
    //     opacity: 1;
    //   }
    }
  }
}

// 子分类
.layer {
    //如果layer自己身上有open就显示
    &.open{
height: 132px;
        opacity: 1;
    }
  width: 1240px;
  background-color: #fff;
  position: absolute;
  left: -200px;
  top: 56px;
  height: 0;
  overflow: hidden;
  opacity: 0;
  box-shadow: 0 0 5px #ccc;
  transition: all .2s .1s;
  ul {
    display: flex;
    flex-wrap: wrap;
    padding: 0 70px;
    align-items: center;
    height: 132px;
    li {
      width: 110px;
      text-align: center;
      img {
        width: 60px;
        height: 60px;
      }
      p {
        padding-top: 10px;
      }
      &:hover {
        p {
          color: @xtxColor;
        }
      }
    }
  }
}
</style>
